A toy is in the form of a hemisphere surmounted by a right circular cone of the same base radius as that of the hemisphere. If the radius of the base of the cone is 21cm and its volume is 23of the volume of the hemisphere, calculate the height of the cone and the surface area of the toy. (use π=227)

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10 grade maths> A toy is in the form of a hemisphere surm...

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10 grade maths> A toy is in the form of a hemisphere surm...

Harshit Singh , 3 Years ago

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